Improvement in operating street-car doors



J'. McGREGOR.

OPERATING STREET-CAR DOORS. No.185,118. Patented No.5, 1876.

THE GRAPHIC COJLY.

UNITED Snares Prion JAMES MGGREGOR, OF DETROIT, MICHIGAN, ASSIGNOR TOMICHIGAN CAR COMPANY, OF SAME PLACE.

IMPROVEMENT lN- OPERATING STREET-CAR DOORS.

Specification forming part of Letters Patent No. 185,118, dated December5,1876; application filed July I,

To all whom it may concern:

Be it knownthat I, JAMES MCGREGOR, of Detroit, in the county of Wayneand State of Michigan, have invented an Improvement in Operating theDoors of Horse-(Jars, of which the following is a specification:

The object of my invention is to provide a horse-car with a simple buteffective device by means of which the driver, standing on the frontplatform, can open and close the rear door of the car without leavinghis post.

The invention consists in a rock-shaft longitudinally journaled in thespace behind the lining, at one side of the car, provided with a crankat the front end for the driver to rotate it with, and at the rear endcarrying a levercrank, to whose ends the ends of a cord are secured.This cord runs over three guidesheavesat the rear end of the car, and issecured at one point to the edge of the oar-door, in such a way that it(the door) is opened or closed by a quarter-turn of the rock-shaft ineither direction.

' Figure 1 is a perspective view, showing a portion of the interior of acar fitted with my improvement, the door being closed and thecar-linings removed. Fig. 2 is a cross-section,

showing the door opened and partially broken away.

In the drawing, A represents a portion of the body of a car, and B adoor, sliding in ways partially across the rear end thereof. 0 is arock-shaft, horizontally journaled along one side'of the car, behind thelining thereof, projecting through the front end, where it receives acrank, 0, within easy reach of the driver, and with which he oscillatesthe said 4 rock-shaft to move the door B. At the rear end ofthe'rock-shat't a lever-crank or bent lever, D, is secured thereto, toone arm of which is secured the end of a cord, E, which is led over agrooved pulley, a, journaled on the rear-end wall of the car, at theinner edge of the door-frame, which is out nearly through to receive it.It passes thence to and over a pulley, b, at the side of the car, thenceover a pulley, 0, under the pulley a, and fastened to the other arm ofthe lever-crank. After the cord has passed over the pulley a it isfastened to an eyebolt, d, projecting from the inner edge of the door. Y

In throwing the crank downward the lower arm of the lever-crank pullsupon its end of the rope to pull open the door, and in a reversemovement the upper arm pulls on its end of the rope, and thus draws thedoor to the closed position with less friction and greater ease thandevices heretofore used for the purpose.

The lever may be single, compound, or a hell-crank, and the cord maybearranged as in Fig. 2.

VVh-at I claim as my invention is- In mechanism for operating car-doors,the combination, with the rock-shaft O, passing along the side of thecar, of the bent lever D, the cord E, and the pulleys a b c,constructed, arranged, and operating substantially as described andshown.

JAS. IVIOGREGOR. Witnesses:

S. S. DE LANO, HUGH MCMILLAN.

